Commit-ID: 2af3024cd78f120d027cb44b454186ba9d7dab24 Gitweb: https://git.kernel.org/tip/2af3024cd78f120d027cb44b454186ba9d7dab24 Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> AuthorDate: Wed, 7 Nov 2018 14:11:40 -0800 Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> CommitDate: Sat, 1 Dec 2018 12:38:49 -0800 cgroups: Replace synchronize_sched() with synchronize_rcu() Now that synchronize_rcu() waits for preempt-disable regions of code as well as RCU read-side critical sections, synchronize_sched() can be replaced by synchronize_rcu(). This commit therefore makes this change, even though it is but a comment. Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> Cc: Jens Axboe <axboe@xxxxxxxxx> Cc: Dennis Zhou <dennis@xxxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: "Dennis Zhou (Facebook)" <dennisszhou@xxxxxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> --- kernel/cgroup/cgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 6aaf5dd5383b..7a8429f8e280 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -5343,7 +5343,7 @@ int __init cgroup_init(void) cgroup_rstat_boot(); /* - * The latency of the synchronize_sched() is too high for cgroups, + * The latency of the synchronize_rcu() is too high for cgroups, * avoid it at the cost of forcing all readers into the slow path. */ rcu_sync_enter_start(&cgroup_threadgroup_rwsem.rss);
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